Changes to VTS Sectors in de CNB Area
The layout of the VTS sectors is being revised to further optimize communication between vessel traffic operators and waterway users. This revision includes a reorganization and expansion of the VTS sectors. For example, a new VTS sector will be added on the Afgesloten IJ: Channel 5, Sector Stad.
Why this change?
The expansion and reorganization of the VTS sectors is the result of an evaluation of traffic flows and communication processes in the CNB area. This evaluation showed a disproportionate load on the radio frequency, leading to an uneven distribution of workload across the various sectors. The high radio traffic load is particularly present in the current VTS Sector Amsterdam (VHF Channel 4).
The North Sea Canal and the Afgesloten IJ are among the busiest waterways in the Netherlands. To ensure and further improve safety and traffic management in this complex area, an expansion and reorganization of the VTS sectors is necessary. The change will enable our traffic operators to monitor and guide vessel traffic even more accurately, with the goal of achieving a more efficient and safer flow of maritime traffic throughout the CNB area.
What does this mean for shipping?
The changes to the VTS sectors affect communication channels and procedures for shipping in the CNB area. The current VTS Sector Amsterdam will be divided into two new sectors: Westhaven (VHF 4) and Sector Stad (VHF 5). The new sector layout, from west to east, is as follows:
- IJmuiden Approach (VHF Channel 07) – the IJmuiden approach area outside the 12-nautical-mile zone (information channel only)
- Sector IJmuiden (VHF Channel 61) – from 12 nautical miles outside the breakwaters up to the IJmuiden lock complex
- Sector Noordzeekanaal (VHF Channel 03) – from the IJmuiden lock complex to kilometre 14.8 of the North Sea Canal
- Sector Westhaven (VHF Channel 04) – from kilometre 14.8 to kilometre 19.6 of the North Sea Canal
- Sector Stad (VHF Channel 05) – from kilometre 19.6 of the North Sea Canal to buoy IJ10 in the Afgesloten IJ
Detailed information can be found in this CNB decision.
We kindly ask all waterway users to prepare for these changes and review the updated sector layout carefully. The new layout is expected to take effect on 30 September 2025 at 06:00 AM.
Stay informed
Leading up to 30 September 2025, we will regularly provide updates on the planned changes. Keep an eye on our website and communication channels for the latest information.
For questions, please contact the Traffic Control Department of the Harbour Master's Division at +31 (0)20 523 46 00 (option 1).